Denial of service in Mozilla Firefox

1) Denial of service

EUVDB-ID: #VU617

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-2827

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote user to cause denial of service on the target system.
The weakness is caused by content security policy (CSP) containing a referrer directive with no values. An out-of-bounds memory read error in mozilla::net::IsValidReferrerPolicy() may cause the application service to deny.
Successful exploitation of the vulnerability results in denial of service on the vulnerable system.

Mitigation

Update to 49.0.

Vulnerable software versions

Mozilla Firefox: 3.5 - 48.0.2

External links

http://www.mozilla.org/en-US/security/advisories/mfsa2016-85/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.